12465606563 has 4 divisors (see below), whose sum is σ = 12521506368. Its totient is φ = 12409706760.

The previous prime is 12465606557. The next prime is 12465606581. The reversal of 12465606563 is 36560656421.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12465606563 - 2¹² = 12465602467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12465606523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27949568 + ... + 27950013.

It is an arithmetic number, because the mean of its divisors is an integer number (3130376592).

Almost surely, 2^12465606563 is an apocalyptic number.

12465606563 is a deficient number, since it is larger than the sum of its proper divisors (55899805).

12465606563 is an equidigital number, since it uses as much as digits as its factorization.

12465606563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55899804.

The product of its (nonzero) digits is 777600, while the sum is 44.

The spelling of 12465606563 in words is "twelve billion, four hundred sixty-five million, six hundred six thousand, five hundred sixty-three".